A normal colonoscopy means that organic diseases of the intestines, such as ulcers and tumors, can be excluded. Normal colonoscopy still not shaped stools may be caused by irritable bowel syndrome, enteritis or hyperthyroidism and other factors. 1. Irritable bowel syndrome: Irritable bowel syndrome is a common functional bowel disease characterized by abdominal pain and changes in bowel habits. There is no abnormality under enteroscopy. The main manifestations are abdominal pain, abdominal distension, diarrhea, constipation, stool shape change and other symptoms. 2. Enteritis: enteritis is an inflammation of the intestinal tract caused by bacteria, viruses, parasites, etc. It usually has no abnormality under enteroscopy. Clinical manifestations mainly include abdominal pain, diarrhea, mucus, pus and blood stools. 3. Hyperthyroidism: Hyperthyroidism is mainly manifested as agitation, irritability and insomnia, palpitation, fatigue, fear of heat, excessive sweating, emaciation, hyperphagia, increased frequency of bowel movements or diarrhea, scanty menstruation and other symptoms. This is the body’s metabolism caused by too much thyroid hormone accelerated, diarrhea, stools are not shaped, etc., so there is no organic changes in the intestinal tract, colonoscopy is usually no abnormality. The symptoms of normal colonoscopy stool still not shaped, it is recommended to go to the hospital for further examination, to clarify the cause of the disease, and treatment with the help of the doctor.